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(11)

EP 1 778 814 A1

(12)

(43) Date of publication: 02.05.2007 Bulletin 2007/18 (21) Application number: 05783035.8 (22) Date of filing: 04.08.2005

(51) International Patent Classification (IPC):  C09K 8/68(2006.01) C09K 8/575(2006.01) C09K 8/08(2006.01) C09K 8/60(2006.01) C09K 8/514(2006.01) C09K 8/74(2006.01) (86) International application number: PCT/US2005/027662 (87) International publication number: WO 2006/017623 (16.02.2006 Gazette 2006/07)

(84) Designated Contracting States: IT (30) Priority: 05.08.2004 US 911898 (71) Applicant: Baker Hughes Incorporated Houston, TX 77019 (US)	(72) Inventors: KELLY, Patrick, A. Conroe, TX 77385 (US) GABRYSCH, Allen, D. Houston, TX 77068 (US) HORNER, Donald, N. Spring, TX 77388 (US) (74) Representative: von Füner, Nicolai et al v. Füner Ebbinghaus Finck Hano Patentanwälte Mariahilfplatz 2 & 3 81541 München 81541 München (DE)